Simple compensation for lateral misalignments in resonant inductive coupling links. Issue 11 (4th May 2016)

• Record Type: Journal Article
• Authors: Eteng, A.A.; Rahim, S.K.A.; Leow, C.Y.; Chew, B.W.; Vandenbosch, G.A.E.
• Is Part Of: Electronics letters. Volume 52:Issue 11(2016)
• Page Start: 954
• Page End: 956
• Publication Date: 2016-05-04
• Subjects: inductive power transmission -- impedance matching; lateral misalignments -- resonant inductive coupling links -- transfer efficiency variation reduction -- RIC wireless power transfer link -- impedance matching -- over‐coupling -- critical coupling -- free‐positioning planar wireless chargers; Electronics -- Periodicals; 621.381
• DOI: 10.1049/el.2016.0600
• Languages: English
• ISSNs: 0013-5194

Abstract

Abstract : This Letter describes a simple compensation method to reduce the transfer efficiency variation in a resonant inductive coupling (RIC) wireless power transfer link subject to lateral misalignment. The technique is based on impedance matching an RIC link such that the link operates at either over‐coupling or critical coupling within the extents of lateral misalignment. Applying the method in a test scenario led to a reduction in the range of obtained transfer efficiency values, from 45% of peak value in a conventional arrangement, to 5%. The proposed method has a potential for application in the design of free‐positioning planar wireless chargers.